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Steve,
I get what you're saying and it's a bugger...
To my understanding...
The feeding nozzle spring is cosmetic...it just causes the nozzle to snap back out of the way so that it doesn't appear in the ejection port. When racked back, the stop on the nozzle should reach the end of it's travel in the slot of the blow back housing and cause it to be pulled back with the rest of the slide.
Somewhere in the blow back cycle there is (one or both):
1. Too much friction, causing drag and killing off the recoil forces of the expanding gas.
2. No enough gas expanding between the piston and the loading nozzle
It doesn't take much to put it out of whack. My last hicapa was doing the same thing...and it still sort of does. I reverted back to a stock floating valve and spring and it's a bit better, but not perfect. I'm trying a new outer barrel tomorrow...and I'll see how that goes.
I'd go through fully disassembling the top again, closely inspecting each piece, applying a little lube here and there and reassembling again. Don't over tighten any of the screws. I'd also pull apart the outer/inner barrel/hopup chamber and reseat everything there.
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